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Magnitude 4.5 SOUTH SANDWICH ISLANDS REGION

Friday, April 17, 2009 at 00:57:55 UTC

Preliminary Earthquake Report

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Magnitude 4.5
Date-Time
  • Friday, April 17, 2009 at 00:57:55 (UTC) - Coordinated Universal Time
  • Thursday, April 16, 2009 at 10:57:55 PM local time at epicenter

  • Time of Earthquake in other Time Zones
    Location 60.14S 26.91W
    Depth 35 kilometers
    Region SOUTH SANDWICH ISLANDS REGION
    Distances 130 km (80 miles) S of Bristol Island, South Sandwich Islands
    385 km (240 miles) S of Visokoi Island, South Sandwich Islands
    870 km (540 miles) SE of Grytviken, South Georgia
    3345 km (2070 miles) N of South Pole, Antarctica
    Location Uncertainty Error estimate: horizontal +/- 14.3 km; depth fixed by location program
    Parameters Nst=30, Nph=30, Dmin=1954.6 km, Rmss=1.19 sec, Erho=14.3 km, Erzz=0 km, Gp=56.0 degrees
    Source USGS NEIC (WDCS-D)
    Event ID usfndw

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    NB: The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude they are not considered the official magnitude.

    The region name is an automatically generated name from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme. The boundaries of these regions are defined at one-degree intervals and therefore differ from irregular political boundaries. More->

    Preliminary Earthquake Report
    U.S. Geological Survey, National Earthquake Information Center
    World Data Center for Seismology, Denver


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